英语时态是语法的一个难点，也是我们学习的重点。下面是小编辛苦为大家带来的小学五年级关于时态的英语语法介绍（精选6篇），希望能够帮助到大家。
1. 过去完成时是与现在完成时相当的过去式：
现在完成时：Ann has just left.If you hurry you’ll catch her.（安刚刚走。如果你快一点，就能追上她。）
过去完成时：When I arrived Ann had just left.（我到的时候，安刚刚离开。）
但是，过去完成时不像现在完成时那样限于表达未指明时间的动作，因此可以说：He had left his case on the 4∶40 train.（他把手提箱丢在4点40分的火车上了。）
2.现在完成时可以和 since/for/always等词连用，表示一个开始于过去并仍在继续或刚刚结束的动：
与此同理，过去完成时也可以用来表示在所说的过去某一时刻之前就已开始的动作。
1)在该时刻仍然在继续。
例如：Bill was in uniform when I met him.He had been a soldier for ten years.（我遇到比尔的时候，他身穿军服。那时他已经当了十年兵了。）
2)在该时刻停止或刚刚停止。
例如：The old oak tree, which had stood in the churchyard for 300 years, suddenly crashed to the ground.（屹立在教堂墓地上已300百年之久的老橡树突然间哗啦一声巨响倒在地上。）
但应注意，过去完成时还可以用来表示：
3)在所说时刻之前某一时候停止的动作。
例如：He had served in the army for ten years; then he retired and married.（他在军队里服役十年，后来退伍并结了婚。）
3. 过去完成时也是一般过去时的过去时，用来表示叙述者或主语在过去的某一时刻回顾更早的动作：
例如：He met her in Paris in 1977.He had last seen her ten years before.Herhair had been grey then; now it was white.（1977年他在巴黎遇见了她。他上一次见到她是十年之前。那时她的头发是灰白的，这时已经全白了。）
过去完成时由had+过去分词构成，因此无人称变化
肯定式：I had/I'd worked等
否定式：I had not/hadn't worked等
疑问式：had I worked等
否定疑问式：had I not/hadn't I worked等
用法：在过去的时间里，两个动作中，发生在前的那个动作要用过去完成时。
结构：had+过去分词
After she had finished her homework, she went shopping.
They had sold the car before I asked the price.
The train had left before I arrived at the station.
After/before引导的时间状语从句放在句首要在句子后面加逗号，如果放在主句后则不用加。
1.变疑问句将助动词移到句首
Had she finished her homework?
2. 变否定句在助动词后面加not
She hadn’t finished her homework.
3. 肯定回答及否定回答
Yes, she had. No, she hadn’t.
4.特殊疑问句：
What had she done?
表示现在正在进行的动作。
构成： 主语+be动词+动词的现在分词+其它成分
We are having lunch.
He is reading a book.
The dog is running after a cat.
The boys are swimming across the river.
★变疑问句将be动词移到句首
Are we having lunch?
Is he reading a book?
Is the dog running after a cat?
Are the boys swimming across the river?
★变否定句在be动词后面加 not
We are not having lunch.
He is not reading a book.
The dog is not running after a cat.
The boys are swimming across the river.
★特殊疑问句：what, which, how, where, who, etc.
疑问词+动词+主语+现在分词
What are you doing?
What is she doing?
What is the dog doing?
没有进行时的动词(必背)
表示状态，思想，感情和感觉的动词不能表示正在进行的动作
1. 表示感觉，感官的词
see, hear, like, love, want,
2. have, has当”拥有”讲时没有进行时
表示将来将要发生的动作， 经常和tomorrow, next year, the day after tomorrow, the year after the next, in five hours' time, etc. 表示将来的词联用。
结构：主语+助动词will+动词原形
I will go to America tomorrow.
The pilot will fly to Japan the month after the next.
Jack will move into his new house tomorrow morning.
★变疑问句将助动词移到句首
Will you go to America tomorrow?
Will the pilot fly to Japan the month after the next?
Will Jack move into his new house tomorrow morning?
★变否定句在助动词后面加not
I will not go to America tomorrow.
The pilot will not fly to Japan the month after the next.
Jack will not move into his new house tomorrow morning.
★肯定回答及否定回答
Yes, I will. / No, I will not.
Yes, he/she will. / No, he/she will not.
Yes, he will. / No, he will not.
★特殊疑问句
What will you do?
had been + V-ing形式